Earth’s Cries Recorded in Space

Earth emits an ear-piercing series of chirps and whistles that could be heard by any aliens who might be listening, astronomers have discovered.

The sound is awful, a new recording from space reveals.

Scientists have known about the radiation since the 1970s. It is created high above the planet, where charged particles from the solar wind collide with Earth’s magnetic field. It is related to the phenomenon that generates the colorful aurora, or Northern Lights.

The radio waves are blocked by the ionosphere, a charged layer atop our atmosphere, so they do not reach Earth. That’s good, because the out-of-this-world radio waves are 10,000 times stronger than even the strongest military signal, the researchers said, and they would overwhelm all radio stations on the planet.

Theorists had long figured the radio waves, which were not well studied, oozed into space in an ever-widening cone, like light from a torch.

But new data from the European Space Agency’s Cluster mission, a group of four high-flying satellites, reveals the bursts of radio waves head off to the cosmos in beam-like fashion, instead.

This means they’re more detectable to anyone who might be listening.

The Auroral Kilometric Radiation (AKR), as it is called, is beamed out in a narrow plane, as if someone had put a mask over a torch and left a slit for the radiation to escape.

This flat beam could be detected by aliens who’ve figured this process out, the researchers say. The knowledge could also be used by Earth’s astronomers to detect planets around other stars, if they can build a new radio telescope big enough for the search. They could also learn more about Jupiter and Saturn by studying AKR, which should emit from the auroral activity on those worlds, too.

“Whenever you have aurora, you get AKR,” said Robert Mutel, a University of Iowa researcher involved in the work.

The AKR bursts — Mutel and colleagues studied 12,000 of them —¬†originate in spots the size of a large city a few thousand miles above Earth and above the region where the Northern Lights form.

“We can now determine exactly where the emission is coming from,” Mutel said.

Our planet is also known to hum, a mysterious low-frequency sound thought to be caused by the churning ocean or the roiling atmosphere.

Advertisements

~ by richart123 on August 2, 2008.

8 Responses to “Earth’s Cries Recorded in Space”

  1. Who ever loved, that loved not at first sight?ChristopherMarloweChristopher Marlowe

  2. If people are good only because they fear punishment, and hope for reward, then we are a sorry lot indeed.AlbertEinsteinAlbert Einstein

  3. …a page of history is worth a volume of logic.OliverWendellHolmesOliver Wendell Holmes

  4. I believe in Christianity as I believe that the sun has risen: not only because I see it, but because by it I see everything else.CliveStaplesLewisClive Staples Lewis

  5. 67kcdi3-r5cxpj1-tw6qda06-0 car insurance
    http://urlser.com/?DYEVZ#1
    [url=http://roulette-mo.lookera.net#3]roulette[/url]
    [url]http://free-poker-mo.lookera.net#4[/url]
    [http://online-poker-mo.lookera.net#5 online poker]
    “car insurance”:http://urlser.com/?e64r6#6
    [LINK http://urlser.com/?boo2X#7%5Dlife insurance[/LINK]
    [img]http://victor.freewebhostingpro.com/1.php[/img]

  6. vu7uuze-cs8v0lw-tw6qda06-0 online poker
    http://urlser.com/?DYEVZ#1
    [url=http://urlser.com/?aBCA5#3]homeowners insurance[/url]
    [url]http://urlser.com/?qbKvI#4[/url]
    [http://online-gambling-mo.lookera.net#5 online gambling]
    “best online casino”:http://best-online-casino-mo.lookera.net#6
    [LINK http://black-jack-mo.lookera.net#7%5Dblack jack[/LINK]
    [img]http://victor.freewebhostingpro.com/1.php[/img]

  7. md15yuj-2kev34u-tw6qda06-0 auto insurance
    http://urlser.com/?m6c0v#1
    [url=http://urlser.com/?qbKvI#3]health insurance[/url]
    [url]http://urlser.com/?e64r6#4[/url]
    [http://best-online-casino-mo.lookera.net#5 best online casino]
    “texas holdem”:http://texas-holdem-mo.lookera.net#6
    [LINK http://urlser.com/?xFj4E#7%5Dinsurance%5B/LINK%5D
    [img]http://victor.freewebhostingpro.com/1.php[/img]

  8. ukeht84-x37a05h-tw6qda06-0 http://black-jack-mo.lookera.net#1
    online gambling
    [url=http://texas-holdem-mo.lookera.net#3]texas holdem[/url]
    [url]http://best-online-casino-mo.lookera.net#4[/url]
    [http://urlser.com/?boo2X#5 life insurance]
    “black jack”:http://black-jack-mo.lookera.net#6
    [LINK http://urlser.com/?boo2X#7%5Dlife insurance[/LINK]
    [img]http://victor.freewebhostingpro.com/1.php[/img]

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

 
%d bloggers like this: